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US 7,465,360 B2Granted
Methods for removing a dispersed lubricious coating from a substrate
AssigneeSouthwest Research Institute
InventorCliff J. Scribner
Life of this patent
Estimating the term…
Abstract
The present invention relates generally to methods of removal of a lubricious coating. In more specific aspects, the invention relates to methods of removal of aqueous polymers comprising acrylamide or copolymers thereof from a substrate comprising application of one or more metal salts.
Claims28
A method compnsing:
- applying a composition comprising a metal salt to a lubricious coating disposed on a substrate, said lubricious coating comprising a mixture of polymer particles having a size of about 0.05mm to about 0.5mm, and at least one of water, glycerol or oil, said coating having a kinetic coefficient of friction less than 0.03;
- and
- physically removing at least a portion of said lubricious coating from said substrate after application of the composition comprising the metal salt.
A method comprising:
- (a) applying a metal salt in a crystalline form, as an aqueous slurry, or as a dissolved solution comprising about 4% to about 20% by weight of metal salt dissolved in water to a surface of a lubricious coating disposed on a substrate, said lubricous coating comprising a mixture of a polymer particles having a size of about 0.05mm to about 0.5mm and at least one of water, glycerol or oil, said coating having a kinetic coefficient of friction less than 0.03;
- (b) admixing said metal salt with said lubricious coating;
- and
- (c) physically removing at least a portion of the admixture of the metal salt and lubricious coating from said substrate.
1 more element
A method comprising:
- (a) applying a lubricious coating to a substrate, wherein the lubricious coating comprises a mixture of a polymer particles having a size of about 0.05mm to about 0.5mm and at least one of water, glycerol or oil having a kinetic coefficient of friction less than 0.03, and
- (b) removing at least a portion of said lubricious coating from the substrate comprising applying a composition comprising a metal salt to said lubricious coating, wherein said composition comprises a crystalline material, an aqueous slurry, or a dissolved solution comprising about 4% to about 20% by weight of said metal salt dissolved in water.
A method comprising:
- applying a composition comprising a metal salt to a lubricious coating disposed on a substrate, said lubricious coating comprising a mixture of a polymer particles having a size of about 0.05mm to about 0.5mm and at least one of water, glycerol or oil, said coating having a kinetic coefficient of friction less than 0.03, wherein said composition is further defined as comprising a crystalline material, an aqueous sluffy, or a dissolved solution comprising about 4% to about 20% by weight of said metal salt dissolved in water;
- and
- physically removing at least a portion of said lubricious coating after application of the composition comprising the metal salt.
Dependencies are inferred from the claim text.